Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790509 | Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium | Takemi Miyamoto, Hiroshi Tomiyasu, Kouji Takahashi | 2004-09-14 |
| 6706427 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof | Hiroshi Tomiyasu, Masatomo Shibui, Nobuyuki Eto | 2004-03-16 |